<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8">
</head>

<body>
    <form action="./test_cgi" method="POST">
        x:<input type="text" name="x" value="0">
        <br>
        y:<input type="text" name="y" value="0">
        <br><br>
        <input type="submit" value="提交">
    </form>
    <button type="button" onclick="alert('hello world')">Click Me!</button>
</body>

</html>